Protection Class; Mounting Position - Emerson Bettis RTS CL Series User Instructions

User Instructions
MAN-02-04-60-0350-EN Rev. 3
2.4

Protection Class

RTS Compact Linear CL actuators come by default with IP 68 (EN 50629) protection.
CAUTION: PROTECTION CLASS AND CABLE GLANDS
The protection class specified on the type label is only effective when cable glands also pro-
vide the required protection class, the cover of the connection compartment is carefully
screwed and the mounting position (see Section 2.5) is observed.
We recommend metallic screwed cable glands with a metrical thread. Furthermore, cable
inlets not be needed must be closed with screw plugs. On explosion-proof actuators, cable
glands with protection class EEx e according EN60079-7 must be used. After removing
covers for assembly purposes or adjustment work, take special care upon reassembly so
that seals are not damaged and remain properly fastened. Improper assembly may lead to
water entrances and to failures of the actuator.
NOTE:
The cover of the control unit - the Operating unit - (see Figure 1) must not be opened.
Allow a certain sag in the connector cables before reaching the screwed cable glands so that
water can drip off from the connector cables without running to the screwed cable glands.
As a result, forces acting on the screwed cable glands are also reduced. (see Section 2.5)
2.5

Mounting Position

Generally, the installation position is irrelevant. However, based on practical experience, it
is advisable to consider the following for outdoors use or in splash zones:
•
•
General
Mount actuators with cable inlet facing downwards
Ensure that sufficient cable slack is available
Section 2: General
February 2019
6